fix(js-sdk): use commands.run in Sandbox.getHost() example (#1531)

.changeset/fix-gethost-example-command.md

@@ -0,0 +1,5 @@
+---
+"e2b": patch
+---
+
+Fix the `Sandbox.getHost()` documentation example so it can be copy-pasted. The `@example` called `sandbox.commands.exec(...)`, which is not a method on the `Commands` class (it exposes `run`), so running the snippet threw `TypeError: sandbox.commands.exec is not a function`. It now uses `sandbox.commands.run(..., { background: true })`, allowing the long-running HTTP server to start before the example calls `getHost()`. Documentation only, no behavior change.

packages/js-sdk/src/sandbox/index.ts

@@ -425,7 +425,7 @@ export class Sandbox extends SandboxApi {
    * ```ts
    * const sandbox = await Sandbox.create()
    * // Start an HTTP server
-   * await sandbox.commands.exec('python3 -m http.server 3000')
+   * await sandbox.commands.run('python3 -m http.server 3000', { background: true })
    * // Get the hostname of the HTTP server
    * const serverURL = sandbox.getHost(3000)
    * ```